Screen dimming method, device and electronic equipment

By adjusting the PWM frequency and the voltage of the light-emitting circuit in a specific area of ​​the display screen, the problems of high power consumption and vision hazards caused by high-frequency PWM dimming are solved, achieving eye protection and reduced power consumption.

CN119446062BActive Publication Date: 2025-11-28VIVO MOBILE COMM CO LTD
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Patent Information

Application Number
CN202411905587.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-11-28
Estimated Expiration
2044-12-23

AI Technical Summary

Technical Problem

Existing technologies for PWM dimming result in high power consumption in electronic devices due to high PWM frequencies, which may harm eyesight, and uneven screen brightness at different frequencies.

Method used

The first screen area of ​​the display is determined based on reference information, and the PWM frequency of the area to be adjusted is adjusted from the first frequency to the second frequency. The voltage of the light-emitting circuit is also adjusted to reduce the PWM frequency and voltage of the area to be adjusted, while maintaining high-frequency dimming in other areas.

Benefits of technology

While achieving eye protection, it reduces the power consumption of electronic devices and improves the uniformity of screen brightness.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a screen dimming method and device and electronic equipment, and belongs to the technical field of electronics. The method comprises the following steps: determining a first screen area of a display screen based on reference information, wherein the reference information comprises at least one of the following: display information of the display screen and line-of-sight focusing information of a user; adjusting a PWM frequency of a to-be-adjusted area of the first screen area from a first PWM frequency to a second PWM frequency, wherein the second PWM frequency is smaller than the first PWM frequency; the to-be-adjusted area is at least part of the first screen area; and adjusting a voltage of a light-emitting circuit of the to-be-adjusted area based on the second PWM frequency.
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Citation Information

Patent Citations

  • Human-computer interaction device and method adopting eye tracking in video monitoring

    CN101866215A

  • Terminal screen information layout adjustment method, device, mobile terminal, and storage medium

    CN109471579A